Loading device



C. A. BRAWN.

LOADING DEVICE.

APPLICATION FILED IUNE7, Isis.

1,336,67@ Patned Apr. 13, 1920.

3 SHEETS-SHEET l.

c. A.v BRAWN.

LoAmNG DEVICE.

APPLICATION FILED JUNE 7. 1918.

152536,67@ Patented Apr. 13, 1920.

3 SHEETS-SHEET 2- C. A.. BRAWN.

. LOADING DEVICE.

APPLICATION FILED. JUNE 1, 1918.

Patented Apr. lg, 1920.

3 SHEETS-SHEET 3.

@vi/#Macaw d vio ' erly blast the rock.

CHARLES A. BRAWN, OF PHILADELPHIA, PENNSYLVANIA.

LOADING DEVICE.

Specifcaton of Letters Patent.

Patented Apr. 13, 19.90.

Application led June 7, 1918. Serial No. 238,637'.

To all whom t may concern.'

Be it known that I, CHARLES A.. BizawN, a citizen of the United States, residing` at Philadelphia., in the county of Philadelphia and State of certain new Loading a specification,

It is usually the custom in loading large and deep drilled rock holes with dynamite or other explosive material for blasting purposespto successively drop by hand sticks or pieces of dynamite into the holes until a sufficient charge has accumulated to prop- To do this it is necessary for a man to remain close to the hole and listen so that Vhe can determine whether the dynamite has fallen completely to the bottoni of the hole since sometimes the sticks of dynamite become jammed within the hoh` before they have reached the bottom. llhen this occurs it is necessary t0 probe the dynamite so that it will fall to its proper position, either to the bottom of the hole or upon and useful Improvements in Devices.

the top of the piece of dynamite which hasY been previously dropped.

lt 1s perhaps unnecessary to state that 1t is extremely dangerous to load these drilled holes in s manner and horrible accidents, resulting in death and disfigurement to the workmen, have often occurred.

Furthermore, this previous method of loading drilled holes was extremely slow since in la blasting operations the holes are often drilled to the extent of one hundred and iiity feet or more and thereby requires a gnat deal of time to load, and also, if they are not loaded in a reasonable time the dynamite becomes damp and does not explode properly.

ln addition to the above facts, it is necessary when loading a drilled hole by the old method, to have a large quantity of the dynamite in positions immediately surrounding the hole and sometimes by accident, the result of dangerous. Y Y

One object of my invention is to provide means whereby drilled holes can be quickly and safely lled with a charge of dynamite or other explosive material.

Another object is to so construct thedevice of my invention that it can be operated by a manY located at a safe distance from which is likewise Pennsylvania, have invented of which the following isv this is exploded Y the hole and so that the man is able to listen and distinguish whether or not each successively dropped piece of explosive material has reached its proper destination.

A still further object is to so construct my improved loading device that there is practically no possibility ofthe successive pieces of explosive material to jam within the drilled hole.

Another object is to so make my improved device that it will be of simple construction, durable, and can be operated by one man.

These objects, and other advantageous ends which will be described hereinafter, I attain in the following manner, reference being had to the accompanying drawings in which- Figure l is a side elevation of my invention, showing a door of a magazine open so as to reveal a number of pieces of dynamite or other explosive material,

F 2 is a central sectional elevation of my invention, looking in the same direction as shown in Fig. l,

F ig.. 3 is an enlarged fragmentary section of a'portion of my invention,

Fig. 1l is a section taken on the line al-l of F ig. 3,

Fig. 5 is a section of Fig. 3,

Fig. 6 is a section taken on the line 6--6 of Fig. 3,

Fig, 7 is a perspective view of a base forming a part of my invention,

Fig. 8 is a perspective view of a magazine for the explosive material and showing all the parts thereof in a set position which they will occupy when loaded with explosive material and ready to be inserted within the base shown in Fig. 7, and

Fig. 9 is a fragmentary rear elevation of the magazine.

eferring to the drawings, l0 represents a base which is and has a depending cylindrical sleeve 1l and a flange plate l2. The sleeve 11 is designed to be inserted within the drilled hole 13 of the rock, as clearly shown in Figs. 1 and 2, and so greater area than the diameter of the hole 13, rests on the uppersurface of the rock` The hase l0 also includes a box lll` which is in straight alinement with the axis .0f the sleeve 11,

taken on the line 5 5 preferably made of wood This box lil has a hole extending throughout its entire height and which communicates with the interior of the sleeve 11, as clearly shown in Figs. 1 and 8. The upper portions of the hole 15 is rectangular in cross section, as clearly shown at 16 in Fig. 6, to form a receptacle for a magazine 17. The receptacle 16 terminates at its bottom in a shoulder 1S which erves as an abutment and rest to limit the downward movement oi the magazine within the receptacle. From the shoulder 1S the hole 15 'is circular in cross section, shown at 19, and tapers downwardly 'from a greater diameter than the internal diameter o't' the sleeve 11 to a diameter equal to the diameter oi the interior of the sleeve 11 so that the portion 19 of the hole smoothly blends with the internal diameter of the sleeve 11.

The box 14 has a lateral extension 2O illustrated in the form of a box having a duct 21 extending therethrough at an incline. This duct is also extended througlii the box 14 and communicates with the hole 15.

The bottom oi` the magazine 17 has an aperturc 22 which, when the maga ne is positioned within the receptacle registers with the duct 2l, the magazine being hollow and open at its bottom so that the duct 21 is in communication with the Ynterior oi the magazine and also with the hole 15 below the shoulder 18.

.Il hose 23 has one end inserted within the duct 21 in the extension 2O and this hose can be extended to any desired length so that a person holding the opposite end oic the hose to the oar can hear sounds made within the drilled hole 13 in the rock, in manner hereinaiter'more fully described.v

The magazine 17 in the form illustrated, is made in the form o t' a box which is rectangular in cross section so that its lower end portion. 2d: [its within the receptacle 15. The interior of the end portion 241i of the iragazine 1"? is cirmilar in cross section, illustrated. in (l, and the uppermost portion is, by preference, rectangular in cross section.

The rear 25 of the magazine has a series or" openings 26 therein, one located above another. Within these openings a e pivoted a number oinA .floors 27, said piv g in the present instance being done by hinges 28 (see 5*, El, and Those 'doors 2T adapted to swing within the magazine so that they can be positioned transversely thereoil to form supports 'for sticlrs or pieces 30 of dynamite or othe explosive material. These floors are retained in their tran verse or supporting `positions by means oit a series of pins 31 having eyelets 32 at their outer ends through which are connected a iiexible cord or rope 33.

Perforations are formed in the 'front 35 of the magazine so that these pins 31 cam be projected 'from the outside through the perora-tions Sel and under the respective floors 2T to hold them in said transverse position, as shown at the top portion of the magazine illustrated in Figs. 2 and 3, the cord and its attaching eyelets 32 remaining on the outside oil the magazine. The upper end oi' the cord is secured directly to the magazine and the other end of the cord can be made of any length to permit it to be pulled by a person located at a safe distance from the drilled hole 13.

The magazine is provided at one side with aI door 36 so ythat after the floors have been moved into their transverse positions and supported by the pins 31, the pieces 30 of explosive material vcan be placed upon the several iioors and the magazine can then be carried while in the position shown in Fig. 8, to the base 10, as shown in Fig. i",

and set therein, as shown in Figs. l to 3, in-

elusive. lifter the magazine has been so positioned the operator at a safe position places the remote end of the hose or tube to his ear and pulls or jerlrs upon the cord This action causes the lower-most pin 31 to be withdrawn from the magazine and in so doing the weight of the explosive material upon the lowermost floor 27 will cause said floor to swing on its pivot and the lowermost piece of explosive material will fall first through the end portion 24 of the magazine, then through the portion 19 of the hole 15 into the sleeve 11, and inally into the drilled rock hole 13. The operator then waits until. he hears the thud caused ...y the explosive material striking the bottom oip the hole and then aga-in pulls the cord to cause the next pin 3l of the series to be removed 'from the magazine to release the setond piece of explosive material, and so on until the magazine has been emptied of its entire charge.

While this operation has been taking place, another magazine can be filled by another person and the empty magazine can be replaced by the full one. Thus the drilled hole can be quickly and safely filled with explosive material by a person located at a salte distance from the drilled hole.

1While the weight of the pieces oi" explosive material is suliicient to cause the 'floors to drop when the supporting pins are released, l preferably provide coiled tension springs 37, the opposite ends oi which are respectively connected to the rear 25 of the magazine 17 and to angularly disposed end pieces on the several lioors.- These springs .not only cause the floors 27 to quickly drop but also prevent back lash or rebeu ing movement which might otherwise occur and jam the explosive material within the magazine.

also provide clasps or latches 39 to hold the door 36 in a closed position after the magazine has been illed and for sake of convenience in opening the door I provide the latter with a knob 40.

It Will be noted that the internal diameter of the end portion 2li of the magazine 17 is less than the internal diameter of the upper part of the portion 19 ot the hole 15 so that the pieces of explosive material, While falling, will meet With no obstructions in passing Jfrom the Vinagazir-.einto the portion i9 oi" the hole 15 or into the sleeve 11. IFurther than this, the interior of the magazine, when positioned Within the base 10, is in direct alinement with the hole 15, sleeve l1, and drilled hole 13 so that the pieces of explosive material ivill i'all centrally Within the drilled hole l?) and there is practicallyno chance or". becoming jammed. Thus explosive material is dropped accurately into the drilled holes which it is impossible to always do by hand.

l `Wish it distinctly understood that in making this device no'niaterial should be used in its construction which is liable to cause sparks by friction and Warn any person making this device that no material other than brass or the like can be safely employed. Even the screws for holding the hinges .and the other securing parts should example7 orn brass and not ot steel or iron.

llhile l have described my invention as taking paiicular form; Ait ivill understood that the various parts ot my invention may be changed Without departing from thespirit thereof; and hence l do not limit myself to the precl.N construction set forth, but consider that/l am at liberty to-malrc su changes and alterations as fairly come .-iin the scope of the appended claims.

Having thus described my invention, what l vim as new and desire to secure by Let- Patent is: Y A i. A'magazine l'or containing explosive material vand adapted to have its loiver end inst ted Within hole in the gi sind; means secured to said engage the top of the 'gro-unf.; Where-.by the length of said magazine entering said hole ivill be limited and a structure is provided to assist in holding the magazine in an upright position; and means operative to release said explosive material to permit it to drop into said hole; substantially described.

2. A device et the character described including a supporting structure adapted to support explosive material and to be placed over a hole in the ground; and means for releasing said material, said means having an actuating portion extending laterally to a position suiiicieutly distinct from said explosive material to permit a person to safely operate said releasingr means to cause the explosive material to drop into said hole; substantially as described.

magazine and designed to' 3. A device oi the character described including a supporting structure adapted to support explosive material and to be placed over a hole in the ground; means for releasing said material7 said means having an actuating portion extending laterally to a position sufficiently distinct from said explosive material to permit a person to safely operate said releasing means to cause the explosive material to drop into said hole; and sound conducting means communicating with the hole; substantially as described.

el. A. magazine adapted to be positioned over a hole; means ior releasing explosive. material contained in said magazine to permit it to drop into said hole; and sound transmitting means in communication with said hole and extending to a position remote from said hole whereby the sound produced by the stopping of said explosive material; aftenpassing Within the hole; can be heard; substantially as described.

5. A magazine adapted to be positioned over a hole; movably mounted floors positioned one above another Within the height of said magazine; means ior normally holding said floors in positions to respectively support pieces of explosive material; and means for releasing said floors whereby said pieces oi' explosive ymaterial are successively permitted to fall through said magazine into said. hole, substantially as described.l

6. A magazine adapted to be positioned over a hole; movably mounted floors positioncd one above another Within the height ot said magazine; members 'for respectively .holding said floors in positions to support pieces of explosive material; and means for moving said -members out ot holding engagement with the doors to Vpermit said pieces of explosive material to successively fall through vthe magazine into said hole; 1

substantially as described.

7. A. magazine adapted to be positioned over a hole; movably mounted floors positioned one above another Within the' height oi said magazine; a series of members for respectively holding said Lloors in positions to support pieces ot' explosive material; and a cord connected to said members whereby, when the cord is periodically pulled7 the members will be periodically moved out of holding engagement with the floors to permit said pieces of explosive material to fall through the magazine into the hole7 substantially as described.

8. A magazine adapted to be positioned over a hole and having a plurality of superimposed apertures therein; lioors movably mounted Within said apertures and adapted to be moved transversely to the height of said magazine means for holding said floors in their transverse positions whereby the floors can be used to support pieces of explosive material ivithin the magazine; and

means for actuating said floor-holding means whereby the floors can he released to cause said pieces of explosive material to iall through said magazine into the. hole, substantially as described.

9. A magazine adapted to be positioned over a hole and having a plurality of superimposed apertures therein; ioors movably mounted within said apertures and adapted to be moved transversely to the height of said magazine; means for holding said iioors in their transverse positions whereby the floors can be used to support pieces of explosive material within the magazine; means for actuating said floor holding means whereby the floors can be released to cause said pieces ot explosive material to fall through said magazine into the hole; and means for holding said floors after being released to prevent said floors from rebounding into a transverse position,sub stantially as described.

10. A magazine adapted to be positioned over a hole; movably mounted floors positioned one above another within the height of said magazine; means for normally holding said floors in positions to respectively support pieces of explosive material; and means for releasing said floors whereby said pieces of explosive material are successively permitted to fall through said magazine into said hole, said magazine including a door which, when open, reveals said Hoors and permits the pieces of explosive material to be readily positioned on said fioors, substantially as described.

11. A device adapted to load explosive material into a hole and comprising a base having a box adapted to be positioned over said hole, said box having a hole in alinement with said first hole and throughout a portion of its length providing a receptacle; a magazine adapted to freely fit within said receptacle; and means for releasing explosive material from said magazine to permit it to fall through said hole in the base into said first hole, substantially as described.

12. A device adapted to load explosive material intera hole and comprising a base having a box adapted to be positioned 4over said hole, said box having a hole in alinement with said iirst hole and throughout a portion of its length providing a receptacle and a magazine adapted to freely fit Within said receptacle; means for releasing explosive material from said magazine to permit it to fall through said hole in the base into said first hole, said base having a duct therein communicating with said holes and a hose having one end positioned within said duct and its opposite end extending to a position remote from said hole, substantially as described.

13. A device adapted to load explosive material into a hole and comprising a base having a box adapted to be positioned over said hole,said box having a hole in alinement with said first hole and throughout a portion of its length providing a receptacle and a magazine adapted to freely fit withinsaid receptacle; and means for releasing explosive material from said magazine to permit it to fall through said hole in the base into said first hole, said receptacle terminating at its bottom to provide a shoulder which forms a rest for the bottom of the magazine, the internal diameter of the bottom of the magazine being less than the internal diameter of the hole in the base immediate y below said bottom of the magazine whereby a free passage is provided for the explosive material in passing through said magazine into the hole in the base, subf stantially as described.

14. A device adapted to load explosive material into a hole and comprising a base having a box adapted to be positioned over said hole, said box having a hole in alinement with said -first hole and throughout a portion oi its length providing a receptacle and a magazine adapted to freely fit within said receptacle; and means for releasing explosive material rom said magazine to permit it to fallthrough said hole in the base into said first hole, said base including a sleeve adapted to be positioned Within saidV first hole, substantially as described.

l In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

v CHARLES A. BRAWN. lVitnesses:

ROBERT MACBURNEY, M. M. KEANE. 

